APA (7th ed.) Citation

United States National Herbarium, United States. Division of Botany, & United States National Museum. Contributions from the United States National Herbarium. Smithsonian Institution Press.

Chicago Style (17th ed.) Citation

United States National Herbarium, United States. Division of Botany, and United States National Museum. Contributions from the United States National Herbarium. Washington: Smithsonian Institution Press.

MLA (9th ed.) Citation

United States National Herbarium, et al. Contributions from the United States National Herbarium. Smithsonian Institution Press.

Warning: These citations may not always be 100% accurate.